Directions:1) Whisk together broth, soy sauce, oyster sauce, sugar, sesame oil, and garlic until well mixed.
2) Place sliced beef into the slow cooker. Pour sauce over beef and stir to coat. Cover. Cook on low for 90 minutes.
3) Whisk together 1/4 cup water and the cornstarch.
4) Stir in cornstarch mixture and broccoli to beef. Cover again and cook on high for 30 minutes. At this point you can turn the heat back town to low or warm and keep simmering depending on how pull-apart you want your meat!